Medical devices

• US 7,854,756 B2
• Filed: 01/22/2004
• Issued: 12/21/2010
• Est. Priority Date: 01/22/2004
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Shaw, William J.
• Primary Examiner(s): Stewart; Alvin J
• Application Number:
  US10/762,816
• Publication Number:
  US 20050163954A1
• Time in Patent Office: 2,525 Days
• Field of Search: 623 1413- 1511, 623/23.55, 623/23.56, 623 2357- 2363, 623 14- 149, 623 15- 154, 623/23.72, 623/1.15, 623/1.23, 623/1.39, 424/423, 606/194, 604/524
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61L 27/10 Ceramics or glasses
• CPC Class Codes: A61L 27/446 with other specific inorganic fillers other than those covered by A61L27/443 or A61L27/46
• CPC Class Codes: A61L 29/02 Inorganic materials
• CPC Class Codes: A61L 29/126 having a macromolecular matrix
• CPC Class Codes: A61L 29/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: A61L 31/026 Ceramic or ceramic-like structures, e.g. glasses
• CPC Class Codes: A61L 31/128 containing other specific inorganic fillers not covered by A61L31/126 or A61L31/127
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: Y10T 428/1314 Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.]
• CPC Class Codes: Y10T 428/1362 Textile, fabric, cloth, or pile containing [e.g., web, net, woven, knitted, mesh, nonwoven, matted, etc.]
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

Medical devices including one or more ceramic fibers are disclosed. In some embodiments, each dimension of the ceramic fiber(s) is equal to or greater than one micron.

Claims

1. A medical device, comprising:

a structure comprising at least two fibers, the at least two fibers including a first fiber and a second fiber, the first fiber being a ceramic fiber, the second fiber being a non-ceramic fiber comprising stainless steel, a nickel-titanium alloy, or a combination thereof, wherein the ceramic fiber is intertwined with the non-ceramic fiber, and the device is in the form of a stent, a stent-graft, or a graft.

2. The device of claim 1, wherein each dimension of the ceramic fiber is equal to or greater than one micron.

3. The device of claim 1, wherein the non-ceramic fiber comprises stainless steel.

4. The device of claim 1, wherein the non-ceramic fiber comprises a nickel-titanium alloy.

5. The device of claim 1, wherein the ceramic fiber is knitted with the non-ceramic fiber.

6. The device of claim 1, wherein the ceramic fiber is woven with the non-ceramic fiber.

7. The device of claim 1, wherein the ceramic fiber comprises a therapeutic agent.

8. A medical device, comprising:

a tubular structure; and

a polymer element on the tubular structure, wherein the polymer element comprises a ceramic fiber comprising a metalloid and each dimension of the ceramic fiber is equal to or greater than one micron, wherein the ceramic fiber is from about ten microns to about 1,000 microns long.

9. The device of claim 8, wherein the ceramic fiber is from about ten microns to about 100 microns long.

10. The device of claim 8, wherein the ceramic fiber is from about one micron to about 50 microns wide.

11. The device of claim 8, wherein the ceramic fiber is about ten microns wide.

12. The device of claim 8, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 500;

1.

13. The device of claim 8, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 200;

1.

14. A medical device, comprising:

a tubular structure; and

a polymer element on the tubular structure, wherein the polymer element comprises a ceramic fiber comprising a metalloid and each dimension of the ceramic fiber is equal to or greater than one micron, wherein the ceramic fiber is from about one micron to about 50 microns wide.

15. The device of claim 14, in the form of a stent-graft.

16. The device of claim 14, wherein the ceramic fiber is from about ten microns to about 100 microns long.

17. The device of claim 14, wherein the ceramic fiber is about ten microns wide.

18. The device of claim 14, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 500;

1.

19. The device of claim 14, wherein the ceramic fiber has an aspect ratio of from about 5:

1 to about 200;

1.